{"code":"O02.81","type":"code","title":"Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["abnormal products of conception with blighted ovum (O02.0)","abnormal products of conception with hydatidiform mole (O01.-)","abnormal products of conception with nonhydatidiform mole (O02.0)","papyraceous fetus (O31.0-)","continuing pregnancy in multiple gestation after abortion of one fetus or more (O31.1-, O31.3-)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["O02","O02.0","O02.1","O02.8","O02.89","O02.9"],"inclusionTerms":["Biochemical pregnancy","Chemical pregnancy","Inappropriate level of quantitative human chorionic gonadotropin (hCG) for gestational age in early pregnancy"],"sibling_titles":{"code":"O02.9","title":"Abnormal product of conception, unspecified","isBillable":true},"useAdditionalCode":["code from category O08 to identify any associated complication."],"clinicalDefinition":"Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy is a billable ICD-10-CM diagnosis code (O02.81). Inclusion terms: Biochemical pregnancy; Chemical pregnancy; Inappropriate level of quantitative human chorionic gonadotropin (hCG) for gestational age in early pregnancy. Excludes1 (not coded here): abnormal products of conception with blighted ovum (O02.0); abnormal products of conception with hydatidiform mole (O01.","officialDefinition":"Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy is a billable ICD-10-CM diagnosis code (O02.81). Inclusion terms: Biochemical pregnancy; Chemical pregnancy; Inappropriate level of quantitative human chorionic gonadotropin (hCG) for gestational age in early pregnancy. Excludes1 (not coded here): abnormal products of conception with blighted ovum (O02.0); abnormal products of conception with hydatidiform mole (O01.-); abnormal products of conception with nonhydatidiform mole (O02.0); papyraceous fetus (O31.0-); continuing pregnancy in multiple gestation after abortion of one fetus or more (O31.1-, O31.3-). Use additional code: code from category O08 to identify any associated complication..","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}